CN1057042C - Colored iridescent film - Google Patents

Colored iridescent film Download PDF

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Publication number
CN1057042C
CN1057042C CN95104909A CN95104909A CN1057042C CN 1057042 C CN1057042 C CN 1057042C CN 95104909 A CN95104909 A CN 95104909A CN 95104909 A CN95104909 A CN 95104909A CN 1057042 C CN1057042 C CN 1057042C
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CN
China
Prior art keywords
thermoplastic resin
film
transparent thermoplastic
layer
laminate film
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Expired - Fee Related
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CN95104909A
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Chinese (zh)
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CN1120997A (en
Inventor
雷马克里斯那S·谢帝
斯克特A·库柏
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BASF Catalysts LLC
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Engelhard Corp
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Publication of CN1120997A publication Critical patent/CN1120997A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
    • B44F1/14—Iridescent effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/26—Reflecting filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/418—Refractive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/08—Dimensions, e.g. volume
    • B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
    • B32B2309/105—Thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24851—Intermediate layer is discontinuous or differential
    • Y10T428/24868—Translucent outer layer
    • Y10T428/24876—Intermediate layer contains particulate material [e.g., pigment, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • Y10T428/31797—Next to addition polymer from unsaturated monomers

Abstract

Disclosed is a transparent thermoplastic resinous film of at least 10 generally parallel layers in which the contiguous adjacent layers are of diverse transparent thermoplastic resinous material differing in refractive index by at least about 0.03, the film containing a sufficient quantity of a transparent dye which is soluble in the thermoplastic resinous material of the layers in which it is located to enhance or modify the apparent color of at least one of the reflection and transmission colors of the film.

Description

Colored iridescent film and preparation method thereof
The present invention relates to multi-layer co-extruded light reflective film, this film has the narrow zone of reflections that the interference of light causes.In the time of in the zone of reflections appears at visible wavelength region, film is an iris.Equally, in the time of outside the zone of reflections drops on visible wavelength region, film or light reflection ultraviolet, or reflects infrared light.This plural layers and preparation method thereof are known in the art, as in U.S. Pat 3565985,3759657,3773882 and 3801429 and other patent in all open.
This plural layers comprise a plurality of substantially parallel layer of transparent thermoplastic resin's material, and wherein the adjacent layer of Lian Jieing has refractive index and differs about 0.03 different resins material at least.This film comprises 10 layers at least, more commonly, comprises at least 35 layers, preferably comprises 70 layers at least.
Each layer of film is all very thin, is generally about 30 to 500nm, and preferably about 50-400nm is causing interference like this from the light wave of a lot of boundary reflections.According to the thickness of layer and the refractive index of polymer, a main wavelength band is reflected, and remaining light transmission film, the optical thickness sum of reflection wavelength and a pair of thin layer is proportional.
Catoptrical what and colouring intensity depend on ratio, the number of plies and the thickness evenness of the optical thickness of two difference, layers between the refractive index.If refractive index is identical, areflexia fully between two bed boundarys then, for multilayer iris film, the refractive index of the adjacent layer of connection differs 0.03 at least, preferably differs 0.06 or more at least.For first order reflection, when the optical thickness of layer equated, reverberation was the strongest, although can obtain suitable strong reflection light between 5: 95 and 95: 5 when the ratio of two optical thickness falls into.Can obtain tangible color reflection when being less than 10 layers.Yet, reach maximum colouring intensity, need have 35 to 1000 layers or even more multi-layered.High colouring intensity and the relative narrow zone of reflections and to have strong reflection light when its peak position relevant.Will be appreciated that, though for simplicity, used term " colouring intensity " here, same consideration is applicable to invisible reflection in ultraviolet and the infra-red range.
This plural layers can be with chill roll casting technique preparation, the feed head that uses the flat sheeting die of single aggregate pipe and cooperate with it in this technology, this feed head from each of two or more extruders, collect melt and with its be arranged in need stratotype.The feed head is open in U.S. Pat 3565985 and 3773882, and this feed head can be used for forming two components (that is: ABAB ...) layer that replaces; Three components (ABCABCA for example ... or ACBACBC ...) alternating layer or multicomponent alternating layer more.Very narrow multilayer stream flows through single aggregate pipe flat film die, and each layer while is at the width broadening of mould and change to the same thin with final mould exit thickness in mould.The thickness distribution of the number of plies and layer can be by inserting the change of different feed head mould.Usually, the layer on each limit of outermost layer or sheet material is than other bed thickness.This thick epidermal area can be by a kind of composition that constitutes in the optics core component; Can be and the machinery that is used to bring needs, heat seal or the different polymer of other performance; It also can be the combination of these polymer.
Some nearest progress of iris film aspect are disclosed in U.S. reissue patent US31780; 4937134; In 5089318.U.S.'s reissue patent 31780 discloses and has used thermoplasticity terephthalate polyester or the conjugated polyester resin high index of refraction component as system.The formation of elastomer interference thin film is disclosed in the U.S. Pat 4937134, and wherein all resin materials are particular thermal plastic polyurethane, polyester block acid amides or flexible copolyesters.United States Patent (USP) 5089318 discloses the reflective transparent thermoplastic resin's film of the multilayer that comprises 10 tunics that are parallel to each other at least substantially, wherein the adjacent layer of Lian Jieing has refractive index and differs different transparent thermoplastic resin's materials of about 0.03 at least, and at least a in the resin material be the engineering thermoplastic elastomer resin.
Needed color is included in these iris films so that its appearance increases new content.These colors can be strengthened or change the reflection of iris film or see through color.In addition, when changing iris with viewing angle, non-iris remains unchanged, and therefore observable color will significantly change based on the combination of iris and non-iris component.Unfortunately, proof in the non-iridescent colors adding iris film is difficult to grasp.When plastic pigment is discussed, differentiate dyestuff and pigment very important.Under main processing conditions, pigment is insoluble to plastics in fact, and dyestuff is soluble.
Attempt to add various pigment, pearly-lustre and non-pearly-lustre all do not reach satisfied result.Be sure of that now cause the former of poor like this result because following one or more factors: for the brightest color of the first order, the thin layer thickness that is positioned at the film light core is generally about 0.03 to 0.2 micron, and granules of pigments is big or small about about 0.3 micron usually.Therefore this just means granules of pigments greater than thin layer thickness, uses these face grains to destroy interface between two-layer, and the result causes iris and light scattering loss.Use particle can make generation agglomeration and gathering in the processing film process, thereby cause forming the color solid of particle size greater than the light core layer thickness less than the pigment of light core layer thickness.Do not take place in the occasion of this gathering at those, can run into a kind of in two kinds of identical undesired result.The concentration of pigment is not enough, does not reach positive effect; When the concentration that adds pigment was enough to produce appreciable results for final appearance of films, the reformed degree of resin property was bigger, so that can not produce co-extrusion film.Carried out overcoming the trial of this problem by the top layer that pigment is added film, wherein the thickness on film top layer is generally 3 to 7 microns, and has comprised 20 to 25% of overall film thickness.Here be similarly the given concentration that reaches iridescent colors, preferably add few pigment and can bring into play maximum effect, film seems not add pigment like this, when surpassing this concentration, find that addition is too many for resin, so that resin can not extend and curtain coating becomes film.
Have been found that now the problems referred to above can solve if will have the transparency dye of certain specific character adds in the resin material of each layer.
The present invention relates to a kind of improved colorful multilayer light reflecting membrane, relate more specifically to comprise transparent thermoplastic resin's film of at least 10 layers of substantially parallel thin layer, wherein the adjacent layer of Lian Jieing has refractive index and differs different transparent thermoplastic resin's materials of about 0.03 at least, relate in the film that contains capacity transparency dye (this dyestuff is dissolved in the thermoplastic resin material of thin layer), the layer that adds dyestuff strengthens or has improved the reflection of film and/or sees through at least a appearance colour in the color.
According to the present invention, the iris film in the prior art is by improving to wherein adding particular dye.
All plural layers that the present invention can be used for existing so far.These films comprise the layers of transparent thermoplastic resinous material that multilayer is substantially parallel, and wherein the adjacent layer of Lian Jieing has refractive index and differs about 0.03 at least, preferably differs 0.06 different resins material.These films comprise 10 layers at least, or generally comprise 35 layers at least, preferably comprise at least 70 layers.Each layer of film is all very thin, and about 30 to 500nm usually, and preferred about 50 to 400nm.
Plural layers are usually by chill roll technology preparation, wherein, collect the thermoplastic resin melt that comes out from two or more extruders with the feed head, and it is arranged in the stratotype of needs.Very narrow multilayer stream flows through a single aggregate pipe flat film die, makes all layers while extend and change to final mould exit thickness at the width of mould.The thickness distribution of the number of plies and layer can change by using different feed head moulds.Usually, the thin layer of each side of outermost layer or sheet material is thicker than other layer, form thick relatively top layer like this, being used to form the top layer resin material can be for constituting a kind of in the light core component, or with the different polymer that are used to make its machinery, heat seal or other performance, or the combination of these polymer with needs.
According to the present invention, colouring agent is added wherein in one or more resin materials, addition will be enough to make at least a in the film reflection color, or film sees through at least a in the look, or both (same natures that exist with respect to without colouring agent the time) can both strengthen or change.Colouring agent can add in whole light sandwich layers or in most light sandwich layer and/or all or be not in all top layers.The concentration that adds colouring agent in the number of plies of colouring agent and every layer changes with required color effect.
For using in the present invention, colouring agent must have three characteristics.At first, it must be transparent, promptly do not influence the iris of the film of unassured toner substantially, and in other words, the iris outward appearance of film does not have significant change.The second, colouring agent must be dissolved in the thermoplastic resin material that is added.This just means that the pigment class colouring agent can not use.The 3rd, colouring agent is being used to form under the processing conditions of film and must stablizing.Stability not only refers to the color of dyestuff, also refers under the temperature that dyestuff bears in forming thin-film process, must not move and non-volatile, and wherein temperature is usually up to about 300 ℃.Generally between about 200～260 ℃.
Can be used in the dyestuff of the present invention, making us interested especially is that those are dissolved in the dyestuff in aliphatic or the aromatic compound, usually, azo dyes, anthraquinone dye, pyrazolone derivative and pyridone dyes are applicable to the present invention.Also have the various fluorescent dyes that add in the plastics also to be applicable to the present invention.
During though aforementioned dyestuff belongs to preferably, expect easily, as long as other dyestuff has above-mentioned three character, also can use.Also can expect can comprising different dyes in each layer of light core, (this dyestuff is dissolved in thin layer wherein in the thermoplastic resin material of one deck) may lack wherein one or more required character when in the resin material that adds adjacent articulamentum because dyestuff.
Whether a certain specific dyestuff satisfies three necessary conditions, can be easy to a brief determination of test method, is about to dyestuff and resin material and mixes and observable performance.Wherein the method for dyestuff and thermoplastic resin material mixing does not belong to a part of the present invention, and any conventional method can be used.
The character of iris film is to have unique color that sees through for given reflection color film.For example, the red reflex look had the blue look that sees through; For green reflected colour, has the pink look that sees through; For blue reflected colour, have the yellow look that sees through, or the like.Adding transparency dye will or strengthen and/or change reflection and/or see through look.Orchil will strengthen the redness in the iris film of reflection Red, and the blue look that will see through becomes aubergine or carmetta (deciding according to the concentration of orchil).Equally, orchil becomes the blue look in the blue look reflection iris film into aubergine or carmetta, and the yellow that will see through becomes orange.Use the various combination of various dyestuffs, the variation that the iris film reflects or see through look equally also can take place.Different colouring agents can be used in the different component of iris film, and the result is similar to the combination dyestuff.Component in the iris film is used red and another component is used and yellowly will be produced and use orange similar effect.
The amount that the amount of dye that can add in the thermoplastic resin only can be dissolved in the heated plastic resin material and under main processing conditions, can process and do not produce the restriction of migration or volatilization.The amount of the dyestuff that adds in the thermoplastic resin depends on required effect.Low-down dye strength can cause the iris film light light or cyan (Pastel) high light to occur.High dye strength can cause for the influence of final iris film dyestuff too strong again.
For the present invention is described, provided some embodiment below, but should understand these embodiment be not be used to limit of the present invention.Unless otherwise indicated, all temperature in this specification and the claim all are degree centigrade that all umbers and percentage are all by weight.
Embodiment 1
With ethylene glycol terephthalate thermoplastic polyester (PET) from an extruder, polymethyl methacrylate (PMMA) adds in the feed head from another extruder, form 115 layers of light sandwich layer, and the second top layer polybutylene terephthalate (PBT) is added to each surface by the 3rd extruder, form the thick iris film of 0.75 mil (19 microns).This film is bright iris, sees basic from the vertical dip angle direction of reflection and is redness, is seen as blue look from the vertical dip angle direction that sees through.
Repeat above-mentioned steps, different is that red pyridone dyes is added among the PMMA with concentration about 0.7%, this dyestuff is transparent, is dissolved among the PMMA, stable under processing conditions (do not move when bearing maximum temperature in 260 ℃ of following processing film processes, non-volatile).The film that obtains is bright and glittering, has strengthened the red reflex look by orchil, and the blue look that sees through becomes purple, the film accent that takes on a red color.
Embodiment 2
The sandwich construction that has same polymer in the light core of preparation and embodiment 1, different is that the light core has 229 layers, two extexines that add by the 3rd extruder are PETG (PET).The film thickness that obtains is 1.40 mils (35.5 microns), its iridescent colors strong than among the embodiment 1, and this is because the number of plies in the light core has increased.The adding of orchil causes the red reflex look to be strengthened, and the blue look that sees through becomes aubergine.
Embodiment 3-6
Repeat embodiment 1, it is as follows to change part:
Embodiment Total number of plies High refractive index polymer The low-refraction extracting mixture The top layer polymer
3 117 PET PMMA PET W/ redness
4 117 PET W/ redness PMMA PBT
5 231 PET PMMA PBT W/ redness
6 231 PET W/ redness PMMA PBT
Embodiment 7-30
Repeat to have among above-mentioned 6 embodiment the film of different-thickness, obtain the reflected colour of following vertical dip angle direction: orchid/purple, orchid/green, red/green and red/Huang.
Embodiment 31-60
Repeat embodiment 1 to 24 with blue look anthraquinone dye by concentration about 0.4%.
Embodiment 61-90
Combination with green anthraquinone dye and yellow pyrazolone dye is about 0.15% repetition embodiment 1-24 with concentration.
Embodiment 91-92
Is 0.6% repetition embodiment 1 and 2 with yellow pyrazolone dye with concentration.The iris film that obtains is seen as redness and yellow from the vertical dip angle direction of reflection.
Embodiment 93
Repeat embodiment 2 with black chromium composite dye with concentration 6%, the iris film that obtains is seen as redness and yellow from the vertical dip angle direction of reflection.
Various replacements and variation be can carry out among the present invention and essence of the present invention and protection domain do not exceeded.The foregoing description represents that available PBT, PET and PMMA make up, and dyestuff added wherein prepares film in a certain component of film.Dyestuff can add any thermoplastic resin material that can be used for preparing the iris film, as long as employed dyestuff satisfies three necessary conditions.Dyestuff also can add in not only one deck of iris film, can also all comprise dyestuff in all layers of iris film.Though being noted that disclosed by the invention in addition is the flat film of production curtain coating type, also can prepare the flash of light film with (blown film) method that becomes pipe.Therefore, various concrete schemes disclosed herein only play illustrative purposes, rather than are used to limit the present invention.

Claims (10)

1. transparent thermoplastic resin's laminate film, it comprises very thin, at least 10 layers substantially uniformly of thickness about 30 to 500nm, one of two surfaces that described layer is substantially parallel and described layer constitute the outmost surface of laminate film, the adjacent layer that connects has different transparent thermoplastic resin's materials, the adjacent layer difference that connects is that refractive index differs about 0.03 at least, it is characterized in that this film contains the stable transparent dyestuff in the thermoplastic resin material that dissolves in thin layer of q.s, the layer that wherein adds dyestuff has strengthened and has improved the reflection of film and seen through at least a appearance colour in the color.
2. transparent thermoplastic resin's laminate film of claim 1, wherein the laminate film outmost surface has the lamination top layer, and described top layer is the basic layers of transparent thermoplastic resinous material uniformly of a layer thickness, and each skin depth is at least 5% of film and a top layer gross thickness.
3. transparent thermoplastic resin's laminate film of claim 2, its mesexine comprises PETG or polybutylene terephthalate (PBT).
4. transparent thermoplastic resin's laminate film of claim 1, the refractive index that wherein said adjacent resin material has differs about 0.06 at least.
5. transparent thermoplastic resin's laminate film of claim 1, wherein a kind of thermoplastic resin material is PETG or polymethyl methacrylate.
6. transparent thermoplastic resin's laminate film of claim 1, wherein dyestuff is present in every kind of different thermoplastic resin material.
7. transparent thermoplastic resin's laminate film of claim 1, wherein dyestuff is not to be present among all different transparent thermoplastic materials.
8. method for preparing transparent thermoplastic resin's laminate film, this film comprises at least 10 layers uniformly of very thin thickness, described layer is substantially parallel, the adjacent layer that connects is that refractive index differs different transparent thermoplastic resin's materials of about 0.03 at least, by with each stacked closing of film, make the adjacent layer refractive index of connection differ 0.03 at least, it is soluble to it is characterized in that use contains, transparent thermoplastic resin's material of the stabilizing dye of stable transparent is as one deck at least wherein, and the addition of dyestuff will be enough to strengthen and improve the laminate film reflection and/or see through at least a appearance colour in the color.
9. the method for claim 8, wherein all different transparent thermoplastic resin's materials comprise the transparency dye of dissolving.
10. the method for claim 8 wherein is not the transparency dye that all comprises dissolving in all different transparent thermoplastic resin's materials.
CN95104909A 1994-05-11 1995-05-09 Colored iridescent film Expired - Fee Related CN1057042C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/240,903 1994-05-11
US08/240,903 US5451449A (en) 1994-05-11 1994-05-11 Colored iridescent film

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ES2120102T3 (en) 1998-10-16
DE69503181T2 (en) 1998-10-22
ATE167826T1 (en) 1998-07-15
EP0681910A1 (en) 1995-11-15
CA2148387C (en) 2002-03-26
EP0681910B1 (en) 1998-07-01
CN1120997A (en) 1996-04-24
KR950031501A (en) 1995-12-18
DK0681910T3 (en) 1998-11-02
US5451449A (en) 1995-09-19
BR9501683A (en) 1996-05-14
HK1009261A1 (en) 1999-05-28
DE69503181D1 (en) 1998-08-06
JPH0875920A (en) 1996-03-22
KR100347879B1 (en) 2003-03-04
CA2148387A1 (en) 1995-11-12

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